CMOSTEK CMT2300A Manual
  1. Manuals
  2. Brands
  3. CMOSTEK Manuals
  4. Transceiver
  5. CMT2300A
  6. Manual

CMOSTEK CMT2300A Manual

Rf frequency calculation
Hide thumbs Also See for CMT2300A:
Table of Contents

Advertisement

Quick Links

CMT2300A/CMT2119B/CMT2219B RF Frequency Calculation Guide
Overview
This document discusses the RF frequency calculation formula for CMT2300A / CMT2119B / CMT2219B, which helps on further
design and application based on the products.
The product models covered in this document are shown in the below table.
Product Model
Frequency Range
CMT2300A
126.33 - 1020 MHz
CMT2119B
126.33 - 1020 MHz
CMT2219B
126.33 - 1020 MHz
Before reading this document, it is recommended to read the AN142-CMT2300A Quick Start Guide, AN184-CMT2119B Quick
Start Guide and AN161-CMT2219B Quick Start Guide to understand the basic information of the 3 products.
Copyright © By CMOSTEK
Table 1. Product Models Covered in This Document
Modulation Type
(G)FSK/OOK
(G)FSK/OOK
(G)FSK/OOK
Main Function
Transceiver
Transmitter
Receiver
Rev0.7 | 1/8
AN199
Configuration Mode
Packaging
QFN16
Register
QFN16
Register
QFN16
Register
www.cmostek.com
AN199

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the CMT2300A and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for CMOSTEK CMT2300A

Summary of Contents for CMOSTEK CMT2300A

  • Page 1 CMT2300A/CMT2119B/CMT2219B RF Frequency Calculation Guide Overview This document discusses the RF frequency calculation formula for CMT2300A / CMT2119B / CMT2219B, which helps on further design and application based on the products. The product models covered in this document are shown in the below table.
  • Page 2 AN199 Table of Contents 1 RF Frequency Calculation.........................3 1.1 Configuring RF Parameters of RX ........................3 1.2 Configuring RF Parameters of TX ........................6 2 Revise History ............................7 3 Contacts ..............................8 Rev0.7 | 2/8 www.cmostek.com...
  • Page 3 First, check the table to get the value of FREQ_VCO_BANK<2:0> and FREQ_DIVX_CODE<2:0> (both need to be written to the registers) and DIVIDER (frequency dividing factor, used to calculate N and K) according to the target frequency band where the configured frequency is located. Rev0.7 | 3/8 www.cmostek.com...
  • Page 4 AFC algorithm, it is calculated based on such parameters of receivers as RX RF frequency, data rate, deviation, and crystal PPM. When the calculation completes, the result displays on the RFPDK screen as shown in the below figure. Rev0.7 | 4/8 www.cmostek.com...
  • Page 5 For example, if the target RF frequency for RX to be configured is 433.92 MHz, according to the above calculation, it can obtain the followings.      is 66 and the corresponding binary is 01000010.  FREQ_RX_K <19:0> is 839282 and the corresponding binary is 11001100111001110010.  in RFPDK. Rev0.7 | 5/8 www.cmostek.com...
  • Page 6 001, and DIVIDER is 4.  433920000.  66.75692308.  TX_N <7:0> is 66 and the corresponding binary is 01000010  FREQ_TX_K <19:0> is 793691 and the corresponding binary is 11000001110001011011.  FREQ_PALDO_SEL is 0. Rev0.7 | 6/8 www.cmostek.com...
  • Page 7 AN199 2 Revise History Table 1. Revise History Records Version No. Chapter Description Date Initial version 2018-10-10 Rev0.7 | 7/8 www.cmostek.com...
  • Page 8 The material contained herein is the exclusive property of CMOSTEK and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of CMOSTEK. CMOSTEK products are not authorized for use as critical components in life support devices or systems without express written approval of CMOSTEK.

This manual is also suitable for:

Cmt2119bCmt2219b

Table of Contents